<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>欢迎来到首页</title>
</head>
<body>
  <div class="container">
    <h1 id="main-title">欢迎光临！</h1>
    <div class="content">
      <p>这是我们的首页，点击下方按钮体验交互</p>
      <button id="color-btn">点我变色</button>
      <div id="counter">点击次数: 0</div>
    </div>
  </div>
</body>
</html>
